19378640307 has 8 divisors (see below), whose sum is σ = 27825739984. Its totient is φ = 11925317088.

The previous prime is 19378640297. The next prime is 19378640311. The reversal of 19378640307 is 70304687391.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19378640307 - 2¹¹ = 19378638259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19378640707) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248444068 + ... + 248444145.

It is an arithmetic number, because the mean of its divisors is an integer number (3478217498).

Almost surely, 2^19378640307 is an apocalyptic number.

19378640307 is a deficient number, since it is larger than the sum of its proper divisors (8447099677).

19378640307 is a wasteful number, since it uses less digits than its factorization.

19378640307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496888229.

The product of its (nonzero) digits is 762048, while the sum is 48.

The spelling of 19378640307 in words is "nineteen billion, three hundred seventy-eight million, six hundred forty thousand, three hundred seven".